Note: The counts for categories are not accurate counts, but are based on estimates.
High priority
- Table tag that should be deleted (17,782 errors)
- ID pendua (52,504 errors)
- Misnested tag with different rendering in HTML5 and HTML4 (1,341 errors)
- Miscellaneous issues (309 errors)
- Multiline table in list (274 errors)
- Multiple unclosed formatting tags (926 errors)
- Paragraph wrapping bug workaround (18 errors)
- Self-closed tags (485 errors)
- Old behaviour of link-wrapping font tags (1,391 errors)
- Whitespace parsing bug (0 errors)
- Unclosed quote in heading (13 errors)
Medium priority
- Bogus file options (48,842 errors)
- Fostered content (258 errors)
- Misnested tags (4,636 errors)
- Multi colon escape (85 errors)
- Links in links (2,335 errors)
Low priority
- Empty headings (55 errors)
- Missing end tag (110,272 errors)
- Missing end tag in heading (73,358 errors)
- Background color inline style rule exists without a corresponding text color (2,324,018 errors)
- Obsolete HTML tags (2,324,018 errors)
- Stripped tags (35,984 errors)